Bullet: 90 gr
TNT HP
(Speer)
Diameter: 0.277"
Powder: IMR 4064 (Improved Military Rifle)
Starting Powder: 51.0 gr
Max Powder: 55.0 gr
Primer: CCI 200
Case: WIN
Trim Length: 2.530"
Cartridge Overall Length: 3.170"
Starting Velocity: 3,155
Starting Pressure:
Max Velocity: 3,494
Max Pressure:
Source: https://reloadingdata.speer.com/Downloads/speer/ReloadingPdfs/270-winchester-with-90-gr-tnt-hppdf.pdf
Printed from Shooter's Reference on 12/21/2024: